Pick finder mechanism employed in looms for weaving.



E. HOLLINGWORTH.

PICK FINDER MECHANISM EMPLOYED m LOOMS FOR WEAVING.

APPLICATION FILED JULY 29,1914.

1,156,007. Patented Oct. 5,1915.

4 SHEETS-SH-EET I.

COLUMBIA FLANOflI/JH CO" WASHINGTON. D. C.

E. HOLLINGWORTH. PICK FINDER MECHANISM EMPLOYED IN LOOMS FOR WEAVING.

APPLICATION FILED JULY 29' 1914.

Patented 001. 5, 1915.

4 SHEETS-SHEET 2 zigf w E. HOLLINGWORTH.

PICK FINDER MECHANISM EMPLOYED IN LOOMS FOR WEAVING.

APP LICATION FILED JULY 29,1914.

Patented Oct. 5, 1915.

1 4 SHEETSSHEET 3.

COLUMBIA PLANOGRM'H C0,. WASHINGTON. u. c.

v E. HOLLINGWORTH. PICK FINDER MECHANISM EMPLOYED IN O0Ms FOR WEAVING.

APPLICATION FILED JULY 29, 1914.

Patented Oct. 5, 1915.

4 SHEET$SHEET 4 Fig. 5.

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.flflmmfls sas EDWARD HOLLINGWORTH, OF DOBCROSS,-ENGLANDi PICK FINDERIVIECEANISM EMPLOYED IN LClOMS FOR WEAVING.

To all whom it may concern."

Be it known that I, EDWARD HOLLING- WORTH, a subject of King George V ofGreat Britain, residing at Dobcross, in the county of York, England,have invented certain new and useful Improvements Connected with PickFinder Mechanism Employed in Looms for Weaving, of which the followingis specification.

This invention relates to loom stop mo-' tion or pick 'finder mechanismwhich, on detection of weft absence or breakage by the usual weftdetector mechanism, causes the picking mechanism to be disengaged, the

pattern mechanism reversed and the loom brought to rest, andparticularly to the type of stop motion or pick finder mechanism actingautomatically to arrest the operations of the loom and start otheroperations to.

efiect readjustment of the loom to bring the warp threads and shuttleboxes into their proper relative positions for the restarting of theweaving operations before the loom itself is brought to rest. Theseoperations are effected without attention on the part of the weaver whocan start up the loom immediately the broken or absent pick has beenattended to.

My invention has for its object to provide improved means whereby on thepick finder mechanism being actuated, the bunter will be held orlockedin inoperative position until after the first beat upof the lay.

on .the restarting of the loom, said means acting automatically and thusrendering the whole of the pick finder mechanism automatic in actionfrom the time it is set in motion on detection of weft absence until theloom has been restarted again and the normal conditions resumed. I

My invention therefore consists broadly in applying in conjunction withthe bunter, a device for engaging said bunter when moved forward by theengagement therer I Specification of Letters Patent.

caused the pick finder mechanism to beset 1n motion and has been locked1n inopera tive position; Fig. 4 is an end viewof the bunter and some ofthe cooperating parts, showing the position when the loom is ready forstarting up, and Fig; 5 is an end elevation of one form of pick findermechanism with which my improved mechanism cooperates.

Referrlnglto the drawings, 1 represents the loom side frame, 2 theshipper shaft controlling the usual loom stop mechanism, and

3 the shipper handle fast thereon; 4 is .the

lay and 5 the dagger supported; on the lay and adapted to'be adjusted inposition KGB.

Patented Oct. 51, 1915. Application filed July 29, 1914. Serial No;853,917. I

by connections from'the weft detector mechanism of the loom in theordinary and well v are known manner. Such connections shown in UnltedStates patent to M0- Michael, No. 581,515, issued April 27, 1897 Thepick finder mechanism shown at Fig.

5 comprises a cam 6 loosely mounted on a stud 7 and adapted to berotatively 'connect- 1 ed at the desired time to a driven gear 8,

alsomounted looselyon the stud 7, by means i of a clutch lever 9 pivotedon the cam and adapted to be drawn by a spring 10 into the path ofprojections 11 on the face of the said gear 8. When thusp'ositioned, one

treme end of the'lever 9, thus preventing the cam from beingd1splacedfor-wardly relatively to the gear 8. A cam roll 12 carried ofthe projections 11 will engage a lug 9 upon the rear face of the lever9, while the projection 11 next in advance of the en-f gaged projectionwill contact with the exby'one arm of a lever 13 pivoted ion a' stud 1 1is adapted to ride on the periphery of the cam 6. The other arm of saidlever 13 is connected'by a rod 15to any suitable de and for reversingthe pattern mechanism and shuttlebox shifting mechanism. Such devices inone form are shown in the United States patent to McGuinness, No.913,301,

issued February 23, 1909. A catch 16 pivotally mounted on the studlanormally en holds the same in inoperative position] rod 17 ispivotally connected at one end vices for controlling the pickingmechanism I to a depending armon the catch 16, the

other end of the rod 17 being connected for actuation by the weftdetector mechanism, as will be hereinafter described. So long as theloom is running normally, the parts remain in the position shown in Fig.5. On weft breakage or failure occuring, the weft detector mechanism,through connections including the rod 17, acts to raise the catch 16clear of the clutch lever which is there fore drawn down by the spring10 to operative position and causes the cam 6 to he clutched to the gear8 and therefore to be driven.

The rotation of the cam, acting on the lever 13 through the roll 12,causes the rod 15 to effect the disengagement of the picking mechanismand the reversal of the pattern mechanism and shuttle box shiftingmechanism. The loom then continues to run, in this instance for twopicks, with the picking mechanism disengaged and the pattern and shuttleboX mechanisms reversed, after which the cam 6 permits the lever 13 toreturn part way toward its original position, this movement beingufiicient to return the pattern and shuttle boX mechanisms to theirnormal or forward running positions. The loom then runs another pick bywhich time a supplementary cam 18 on the face of the cam 6 contacts withand swings a lever arm 19 loosely mounted on the stud 11 and thismovement of the arm 19 through a rod 20 (and other connections to be described) operates the usual shipper shaft and loom stop mechanism. Bythe time the loom stops the catch 16 has rengaged the part 9 of theclutch lever and raised the said lever to inoperative position and allthe parts have resumed the posltion shown in Fig. 5, the return of thelever 13 to normal position reengaging the picking mechanism. Since theloom ran with the pattern and shuttle box mechanisms reversed for twopicks and then with these mechanisms running forward for one pick,before being stopped, it follows, as will be understood that on the loombeing started up, the same shed will he presented as that in which thefailure or breakage occurred.

The means above set forth form no part of my invention, but the briefdescription given will enable the hearing of my improvements to beunderstood.

I will now describe my improvements as shown in Figs. 1 to at- On theshipper shaft 2 I provide a sleeve 21, loosely mounted on said shaft,and having at one end thereof a bracket or arm 21 extending upwardly andhaving pivotally mounted thereon a hunter nected at its free end to oneend of alink 23.

The opposite end of the link 23 (Fig. 2) is pivotally connected to thefree end of an arm 2-1 fast on a shaft or spindle 25. An arm 26 alsofast on said shaft 25 is pivotally connected at its free end to the endof the rod or connector 17, whose other end is connected to the pickfinder mechanism as shown at Fig. 5 so that a movement of the said rod17 in the direction of the arrow B, Fig. 1, will cause the pick findermechanism to be set in operation. Pivotally mounted on the free end ofan arm 27 fast on the shaft 2, is a catch 28 connected by a spring 29with the hunter 22. hen the parts are in operative position, the frontend 22 of the hunter rests against the upperend of the catch, as shownin Fig. 2, being held in engagement therewith hy the spring 29. Passingthrough and slid-able in an opening in the bracket 21 of the sleeve 21is a bar or slide 30 whose front end has a lateral fork or notch 30 intowhich enters a rib or pro jection 28 on the catch 28. The shipper handle3 has an extension 3 below the shaft 2, and pivotally connected to thisextension is one end of a link 31 whose opposite end is connected to onearm of a lever loosely mounted on the shaft or spindle 25, the other armof said lever 32 being connected to one end of the rod 20 leading tothat part of the pick finder mechanism which controls the stopping ofthe loom.

The action of the mechanism above set forth is as follows:-So long asthe loom is running normally the hunter rests against the catch 28, asshown in Fig. 2, and the dagger 5 occupies such a position relatively tothe hunter that it does not engage therewith as the lay comes for-ward,will be understood from Fig. 1 where the lay is shown at front center.On breakage or failure of the weft occurring, the weft detectormechanism causes the dagger to he moved into the path of the hunter asshown in dotted lines in Fig. 1, so that as the lay heats up the daggerengages, the hunter and forces same forward. The forcing forward of thehunter causes the sleeve 21 to be rocked and this movement of thesleeve,

through the arm 21 link 23, arm 24, shaft 25, arm 26, and rod 17 causesthe pick finder mechanism to he set into operation. As the hunter movesforward, the catch 28 is rocked on its pivot, and the forward end of thehunter slips under and is engaged by the catch, which is drawn backthrough the action of the spring 29 ,(see Fig. As the sleeve 21 returnsto its, normal position, therefore, the rear end of the hunterismaintained in a raised position as shown at Fig. at, and as the layheats up during whatever number of revolutions the crank may make whilethe pick finder mechanism is operating and before the loom comes to.rest, the

mal position, the rear end of said bar or' slide projects rearwardly adistance beyond the normal. On the loom being started up, the presenceof weft at the first or a subsequent beat-up causes the dagger to bemoved back to normal or inoperative position, as shown in full line inFig. 1, and at the first or a subsequent beat-up of the lay, a lateralextension 5 of the dagger 5 strikes the end of the bar and forces itforwardly, caus-l ing the catch 28 to be freed from its engagement withthe front end of the bunter, and allowing the spring 29 to pull down therear end of the bunter to operative position (Fig. 2) ready to be struckby the dagger on the next indication of weft breakage or failure.

Although I have only described and shown one embodiment of mechanism foreffecting the object of my invention, other methods of efiecting thelocking of the hunter in inoperative position and the release orreturning of same to operative position on restarting of the loom, willsuggest themselves to those skilled in the art of 100m construction, andI would therefore haveit understood that I do not limit myself to thedetails of construction and arrangement shown and set forth. 7 Havingthus described my invention, that I claim as new and desire to secure byLetters Patent is I 1. In a loom, in combination, controlling means forpick finding mechanism, an actuating device carried by the lay, andmovable by weft detecting mechanism into operative and inoperativepositions, connections operable by said device when inoperative positionto release said controlling means, and means to renderv said connectionsthereafter inoperative until after said actuating device is returned toinoperative position.

2. In a loom, in combination, controlling means for pick findingmechanism, an ac tuating device carried by the lay, and movable by weftdetecting mechanism into operative and inoperative positions,connections operable by said device when in operative position torelease said controlling means, and means to render said connectionsthereafter inoperative until after sald'actuating device is returned toinoperative position, said connections including a hunter positioned forengagement by said actuating device, and said latter means including acatch effective to lock said bunterout 'of the path of said actuatingdevice.

3.'In aloom in combination, controlling means for pick findingmechanism, an actuating'device carried by the lay, and movable by weftdetecting mechanism into operative and inoperative positions,connections operable by said device when in operative position torelease said controlllng means, and means to render sald connectionsthereafter inoperative until after said actuating device is returned toinoperative position,

said connections including a hunter posi' tioned for engagement bysaidactuating device, and said latter means including a catch effective tolock said bunter out of the path of said actuating device, and. a memberoperable by said actuating device, when the latter is in inoperativeposition, to disengage said catch.

4. In aloom, in combination, a frame, a lay, controlling means for pickfinding mechanism, a dagger mounted on said lay,

and movable into operative and inoperative positions, a hunter supportedon the frame and also movable into operative and irioperative positions,connections whereby movement of said bunter by said dagger will causeoperation of said controlling means,

means to thereafter lock said bunter in operative position, and meansoperable to release said bunter after the return ,of the dagger :toinoperative position.

5. Ina loom, in combination, a frame, a lay, controlling means for pickfinding mechanism, a dagger mounted on said lay, and movable intooperative and inoperative positions, a hunter supported on the frame andalso movable into operative and inoperative positions, connectionswhereby movement of said bunterby said dagger will cause operation ofsaid controlling means, means to thereafter lock said hunter ininoperative position, and means to release said bunter, said releasingmeans comprising a movable member engaging said locking means andpositioned for actuation by a portion of said dagger when the latter isin inoperative position.

In testimony whereof I affix my signature in the presence of twowitnesses.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner otPatents,

' r Washington, D. 0'.

